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Arsenic-Treated Wood Exposure in Children: Risk Assessment Analysis

Presentation on children's exposure to arsenic-treated wood, Monte Carlo risk assessment method, dislodgable arsenic on wood surface, soil arsenic levels, and excess cancer risk. Comparison of EPA and industry exposure assumptions.

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Arsenic-Treated Wood Exposure in Children: Risk Assessment Analysis

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  1. Children’s exposure to arsenic-treated wood A preliminary Monte Carlo risk assessmentPresentation to EPA’s Science Advisory PanelOctober 23, 2001 Jane HoulihanSean GrayRichard Wiles

  2. Monte Carlo method of risk analysis

  3. Arsenic that rubs off onto hands from contact with arsenic-treated wood

  4. Dislodgeable arsenic on the surface of arsenic-treated wood

  5. Arsenic levels in soil beneath arsenic-treated wood Stilwell and Gorny 1997, 7 Connecticut decks, sandy loam Townsend and Solo-Gabriele 2001, 9 Florida structures, sand Osmose, Florida research plot data Wood industry (SCS 1998) 10 prefabricated Virginia decks

  6. Soil ingestion

  7. Body Weight: 1st to 99th percentiles

  8. Surface area calculated from body weight

  9. Dermal absorption: Regression analysis of body part area percentages

  10. Differences in exposure parameters

  11. Excess lifetime cancer riskto children exposed to arsenic-treated wood

  12. Comparison between EPA and wood industry exposure assumptions

  13. Model sensitivity to assumed dislodgable arsenic transfer rates

  14. Excess lifetime cancer riskto children exposed to arsenic-treated wood

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